Miniaturized rat-race coupler with bandpass response and good stopband rejection
Journal
2009 IEEE MTT-S International Microwave Symposium
Pages
709-712
Date Issued
2009-06
Author(s)
Abstract
Coupled-resonator network is applied to the design of a rat-race coupler with bandpass response in this paper. Net-type resonators are used to reduce the circuit size and control the harmonics. As a result, the proposed coupler exhibits not only a compact size but also good stopband rejection. The proposed coupler occupies only one sixth area of the conventional design, while the rejection level in the stopband is better than 30 dB up to 4.3 f 0 . The measured results are in good agreement with the simulated predictions.
SDGs
Type
conference paper